So my friend is having issues with his right turn signal bulb working on and off. Tonight we replaced the bulb and found the old bulb had rust on a couple of the contacts. We cleaned the socket out with contact cleaner and put some dielectric grease on the new bulb and worked when we tried it. He took off and it quit working a couple blocks away. When it doesn't work the arrow on the dash won't light up either. We are lost on what it could be? We are thinking maybe a bad socket. Any help is appreciated.